Reversible oscillating engine.



J. L. FILLING.

REVERSIBLE OSGILLATING ENGINE.

Y APPLICATION IILED In e, 1907. Patented Dec. L 1908- 3 SHEETS-SHEET l.

lllllln Il i v J. L. PILLING. REVERSIBLE OSGILLATING ENGINE.

Y APILIUATION FILED HAY 6, 1907. Patented Dea 1 3 SHEETS-SHEET 3.

l i 27 "Il 'lurql'lllmrmnllff l/ n". lundis@ .I Eig? t 4 E-mum.

fi J

s ca., wAsHINm-ow. D. c.

UNITED STATES PATENT oEEToE.

JAMES LOWE PILLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO J. L. PILLINGCOMPANY, CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

REVERSBLE OSCILLATING ENGINE.

Specification of Letters Patent.

Patented Dec. 1', 1908.

Application led Hay 6, 1967. Serial No. 372,007.

To all whom it may concern:

Be it known that I, JAMES LowE FILLING, a citizen of the United Statesof America, and a resident of Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements inReversible Oscillating Engines, of which the following is aspecification.

This invention relates to reversible oscillating engines, and moreespecially to the type of oscillating engines set forth in my formerpatent No. 787,692, dated April 18, 1905, and the present improvementhas for its object to provide a simple and efficient structuralformation and combination of parts, adapted to afford means for theready and eiiicient reversal of thedirection of rotation of the engine,all as will hereinafter more fully appear.

In the accompanying drawings: Figure 1, is an elevation of the end headof a twin cylinder engine casing, illustrating the ported seats of thesame. Fig. 2, is a longitudinal Sectional elevation of said engine,illustrating the general arrangement of the engine parts, as well as theported valve face of one of the engine cylinders. Fig. 3, isl asectional elevation on line ca Fig. 6, illustrating the reversing valveof the engine. Fig. 4, is a similar view on line @2-m Fig. 6. Fig. 5, isa vertical transverse section of the engine, on line #km2 Fig. 4. Fig. 6is a detail longitudinal section of the engine on line v4-x4 Fig. 4.Fig. 7, is a detail elevation of the ported end of the movable member ofthe reversing valve. Fig. 8, is a detail transverse section of the sameintermediate its length. Fig. 9, is a detail elevation of the ported endof the stationary member of the reversing valve.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents the main in'closing housinghaving at one end a fixed or integral head 2, and at the other end aremovable head 3, to constitute a closed casing in which the cylindersand other moving parts of the engine are contained. As usual in thepresent type of engines, the fixed head aforesaid carries the bearingsfor the engine shaft, while the removable head is formed with the seriesof passages and ports by which air or other motive fluid is conducted toand from the oscillating cylinders of the engine; and in additioncarries the reversing valve by which the direction of revolution of theengine is governed, and to such end said removable head will comprise aconstruction as follows 4, is an individual passage or channel formedlongitudinally inthe head 3, and communicating at each end with a pairof seat ports 6 and 7 of each engine valve, while at its middle saidpassage 4 is in connection with an individual passage or channel 10 ofthe reversing valve hereinafter described. 5, is a similar individualpassage or channel formed in parallel relation to the channel 4, andcommunicating at each end with the other pair of seat ports 8 and 9 ofeach engine valve, while at its middle, said passage 5, is in connectionwith an individual passage or channel of the reversing valve hereinafterdescribed.

12, is a transverse cylindrical bore or chamber formed in the head 3,intermediate of the passages 4 and 5, and adapted to receive astationary bushing, constituting the stationary member of the reversingvalve as hereinafter set forth. Such bore communicates with theaforesaid channels 10 and 11, and also with individual channels 13 and14, which in turn are in communication with the inlet and the exhaustnecks 15 and 16 for the motive fluid, as shown in Figs. 3 and 4.

17, is the stationary bushing secured in the aforesaid bore 12, andprovided with a marginal flange 18 at its outer end, which -its an outerenlarged portion of the bore 12 to insure the proper position of thebushing in the end head 3 of the engine casing. The said bushingconstitutes the stationary member of the manually controlled reversingvalve of the engine, and to this end is formed with a closed inner head19, and with an outer head 20, formed with four equidistantly spacedports 21, 22, 23 and 24, as shown more particularly in Figs. 5, 6 and 9.

25, are a corresponding number of longitudinal and radial partitionsdividing the interior of the bushing into four passages, which in turnconstitute individual connecting channels between the four ports 21, 22,23 and 24, just described, and the before described channels 10, 11, 12and 13, through openings formed in the circular wall ofs'aid valvemember 17, as illustrated in Figs. 5V

and 6. Such movable valve member is formedv with an outer closed headand an inner ported head, the ports 27 28, 29 and 30 of which correspondand are adapted to register with the radial ports 21, 22, 23 and 24 ofthe stationary valve member.

31, is a central longitudinal partition dividing the interior of themovable valve member into two chambers and with each chamber individualto a pair of the ports 27, 29', and 2S, 30 as illustrated moreparticularly in Fig. 8.

32, is a cover closing the outer end of the aforesaid bore 12, in whichthe reversing valve is arranged.

33, is a central operating stem on the movable member of the reversingvalve; such stem passes through a central orifice in the cover 32, andis formed with a non-circular end for the reception of a suitable handleor crank.

The operation of the reversing valve above describedis as follows With apartial rotation of the movable valve member in one direction, its ports28 and 30 are in register with the ports 22 and 24 of the stationaryvalve member, and motive fluid from the inlet neck 15 is introducedthrough said ports into the channel or passage 5; at the same time thecompanion ports 27 and 29 of the movable valve member are in registerwith register with the ports 23 and 22 of the stationary valve member,and motive fluid from the inlet neck 15 1s introduced through said portsinto the channel or passage 4; at the` same time' the ports 27 and 29 ofthe movable valve member are in register with the ports 24 and 21 of thestationary valve member, to connect the passage or channel 5 with theexhaust neck or passage 16. As so connected the engine is operative inthe other direction, say to the left. With the movable valve memberturned so that its ports 21, 22, 23 and 24, are out of registerL Avitli'the ports 27, 28, 29 and 30, of the sta- 'vtionary valve member, motivefluid isl cut oitA from the engine cylinders,vand the engine lat'rest.`

34 is a Aspring interposed between the cover 32v and the movable memberof the reversing 'valve to yieldingly hold said valve member to itsseat.

35 is a central guide stem on the aforesaid movable valve member', andhaving bearing in a central orifice in the stationary valve member 17 asshown.

36 is a secondary spring interposed between the inner end of thestationary valv-e member 17 and a removable nut 37 on the inner' end ofthe guide stem 35, to assist in holding the movable valve member to itsseat.

3S are counterpart oscillating engine cylinders provided with the usualtrunnions 39, by means of which they have oscillation in suit-ablebearings formed therefor inthe end heads 2 and 3 of the engine casing,as usual.. Such cylinders are provided with the usual pistons and pistonrods connected in common to the crank pin of the engine shaft 40.

4l is the usual circular seat on a side of each cylinder, and throughwhich the opposite ports 42 and 43 open. Such ports communicate with therespective ends of a cylinder and are adapted to alternately registerwith one pair or the other of the before described seat ports 6, 7, 8and 9, in the normal operation of the engine and in manner usualthereto.

In the present improvement the trunnion in Fig. 5, and with the area ofsaid piston chamber slightly in excess of the combined area of a pair ofthe ports 6, 7, 8 and 9.

46 is a pipe or passage extending from a motive fluid inlet portion ofthe engine, preferably the inlet neck 15, to the piston chamber 45aforesaid, and adapted to introduce therein a motive fluid pressure inexcess of that exerted in the opposite direction through the series ofports 6, 7, S and 9, to thus maintain the circular seat 41 of the enginecylinder in proper contact with the valve seat of the engine housing andwith a minimum amount of friction and wear, regardless of fluctuationsin pressure of the motive fluid supplied to the engine.

47 is a neck on the casing of the reversing valve for the attachment ofa suitable lubricator.

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent is 1. A controlling and reversingvalve comprising in combination a valve housing forming a part of an endhead of the engine' casing and provided with apair of individualpassages adapted for communication with the engine cylinders, crossedpartitions in said housing forming four chambers two of which haveindividual communication with the pair of passages aforesaid, inlet andoutlet necks on the valve housing having eo1n lnunication with the othertwo of said chambers, a circular closed top movable valve member dividedby a central transverse partition into a pair of chambers and seated atone end of the four chambers aforesaid, a cover forming a journal forsaid movable valve member, and means for imparting a turning movement tosaid valve member, substantially7 as set forth.

2. A controlling and reversing valve comprising in combination a valvehousing forming a part of an end head ofthe engine casing and providedwith a pair of individual passages adapted for communication with theengine cylinders and having a circular bore, a stationary valve memberarranged in said bore and divided radially into four chambers two ofwhich have individual communication with the pair of passages aforesaid,inlet and outlet necks on the valve housing having communication withthe other two of said chambers, a circular closed top movable valvemember divided by a central transverse partition into a pair of chambersand seated at one end of the four chambers aforesaid, a cover forming ajournal for said movable valve member, and means for imparting a turninmovement to said valve member, substantial y as set forth.

3. A controlling and reversing valve comprising in combination a valvehousing forming a part of an end head of the engme casing and providedwith a pair of individual passages adapted for communication with theengine cylinders and having a central bore enlarged at its outer end, astationary valve member flanged at its outer end and litted to saidbore, said valve member being divided radially into four chambers two ofwhich have individual communication with the pair of passages aforesaid,inlet and outlet necks on the valve housing having communication withthe other two of said chambers, a Circular closed top movable valvemember divided by a central transverse partition into a pair of chambersand seated at one end of the four chambers aforesaid, a cover forming ajournal for said movable valve member, and means for imparting a turningmovement to said valve member, substantially as set forth.

Signed at Chicago, Illinois this 30th day of April 1907.

' JAMES LOWE FILLING. Witnesses:

ROBERT BURNS, HENRY Mon.

